When 'wildmenu' is on, command-line completion operates in an enhanced mode. On pressing 'wildchar' (usually ) to invoke completion, the possible matches are shown. When 'wildoptions' contains "pum", then the completion matches are shown in a popup menu. Otherwise they are displayed just above the command line, with the first match highlighted (overwriting the status line, if there is one). Keys that show the previous/next match, such as or CTRL-P/CTRL-N, cause the highlight to move to the appropriate match. When 'wildmode' is used, "wildmenu" mode is used where "full" is specified. "longest" and "list" do not start "wildmenu" mode. You can check the current mode with |wildmenumode()|. If there are more matches than can fit in the line, a ">" is shown on the right and/or a "<" is shown on the left. The status line scrolls as needed. The "wildmenu" mode is abandoned when a key is hit that is not used for selecting a completion. While the "wildmenu" is active, not using the popup menu, the following keys have special meanings: